Search results
Learn how to add or subtract fractions by finding a common denominator. See examples, definitions and explanations of denominators and common denominators.
Learn all about finding common denominators in fractions. Watch how to use the least common multiple of the denominators to rewrite fractions, making them easier to compare or add. Created by Sal Khan and Monterey Institute for Technology and Education.
- 5 min
- Sal Khan,Monterey Institute for Technology and Education
- How do I find LCM with 3 fractionsIts quite simple you find out what the three numbers are, lets say the numbers are: 2,3,4. then you wright the numbers they all have in common. 2:...
- What if one of the denominators is a 1?If the denominator is a 1, then it's still the same formula: you simply divide the denominator by the numerator (ex: 4/1 = 4 divided by 1 = 4). It...
- Can someone explane this to me pls?So you have to find a common denominator, right? For this one, you have to multiply to get the common denominator. So what times 6 equals 24? Also,...
- is LCM n LCD are same?The LCM is used to find the LCD but yes they are the same
- What's a common denominator?A common denominator is a denominator that you can reach by both denominators. For example in the problem 3/4+ 5/6 a common denominator is 12 becau...
- is LCM n LCD are same ?Yes, you can think of them somewhat interchangeably. The LCD for any 2 fractions is the LCM for their denominators. However, LCM is used for other...
- How to know if you are finding the common denominators with some choices like; 3/4+1/3 A.3/4+1/3 = 9...The key is to remember that if you multiply the denominator by a value, you also have to multiply the numerator by that same value. In this example...
Learn what a common denominator is, how to find it, and why it is important for adding or subtracting fractions. Explore the LCM method, the cross multiplication method, and the applications of common denominators with examples and practice problems.
- What are the fractions with common denominators called?The fractions with the common denominators are called the like fractions. For example: $\\frac{2}{5}$ and $\\frac{4}{5}$.
- Can common denominators be negative?No, the common denominators cannot be negative as it represents the common multiples of the denominators, which cannot be negative.
- How is LCD different from the common denominator?Least Common Denominator is the smallest number that can be a common denominator of a set of fractions. On the other hand, the common denominator i...
Learn how to find and use common denominators for fractions, and practice with examples and exercises. Common denominators make it easier to compare, add, and subtract fractions.
Learn what a common denominator is and how to find it using the least common multiple or cross-multiplication methods. See examples of common denominators in real-life situations and practice problems with solutions.
Learn how to find the least common denominator of fractions and why it is useful for adding or subtracting them. See examples, definitions, and a tool to calculate the least common multiple automatically.
Learn what a common denominator is and how to find it for fractions. See examples of multiplying denominators and listing multiples to perform fraction addition and subtraction.
